3551856408 has 48 divisors (see below), whose sum is σ = 9622435680. Its totient is φ = 1183604544.

The previous prime is 3551856401. The next prime is 3551856419. The reversal of 3551856408 is 8046581553.

3551856408 is a `hidden beast` number, since 3 + 551 + 8 + 56 + 40 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3551856401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 389841 + ... + 398847.

It is an arithmetic number, because the mean of its divisors is an integer number (200467410).

Almost surely, 2^3551856408 is an apocalyptic number.

It is an amenable number.

3551856408 is an abundant number, since it is smaller than the sum of its proper divisors (6070579272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3551856408 is a wasteful number, since it uses less digits than its factorization.

3551856408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14496 (or 14489 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The square root of 3551856408 is about 59597.4530328268. The cubic root of 3551856408 is about 1525.7561647085.

The spelling of 3551856408 in words is "three billion, five hundred fifty-one million, eight hundred fifty-six thousand, four hundred eight".